12103311231212 has 12 divisors (see below), whose sum is σ = 21181347643176. Its totient is φ = 6051497618880.

The previous prime is 12103311231149. The next prime is 12103311231283. The reversal of 12103311231212 is 21213211330121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39326738 + ... + 39633305.

It is an arithmetic number, because the mean of its divisors is an integer number (1765112303598).

Almost surely, 2^{12103311231212} is an apocalyptic number.

It is an amenable number.

12103311231212 is a deficient number, since it is larger than the sum of its proper divisors (9078036411964).

12103311231212 is a wasteful number, since it uses less digits than its factorization.

12103311231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78998368 (or 78998366 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12103311231212 its reverse (21213211330121), we get a palindrome (33316522561333).

The spelling of 12103311231212 in words is "twelve trillion, one hundred three billion, three hundred eleven million, two hundred thirty-one thousand, two hundred twelve".